Pipe-coupling.



J5 w' JQ R. C. BLUME.

PIPE GOUPLING.

APPLIOATION FILED AUG. ze, 1912.

Patented Feb. 10, 1914 .aoBERT c. BLUME, 0F CHICAGO, ILLrNoIs.

PIPE-COUPLING. f

Specification of Letters Patent.

Patented Feb. 10, 1914;.

Application ledAugust 26, 1912. Serial No. 717,017.

To all whom 'it may, concern Be it known that I, Itonuk'r C. BLUME, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Pipe-Couplings, of which the following is a specification.

This invention relates to novel unprovements pipe couplings and is designed, primarily, to provide an eiicient coupling of simple and inexpensive construction for connecting two soft metal pipes or a soft metal pipe to a hard metal pipe in a secure manner and without injury to the pipes.

My invention is especially adaptable for connecting a soft metal lined flexible pipe to the block tin pipe which forms a part of the draft mechanism for soda water, beer and the like. Soda waterfountains and beer coolers are customarily. provided with block tin supply pipes which pass through the floor and are connected by rubber hose with the supply tanks or barrels. I contemplate the use of flexible tubing lined with block tin for connecting the block tin supply pipe with the tank or barrel. This flexible tubing may be of any suitable character and properly lined with block tin and it 1s more sanitary and economical than the rubber hose heretofore used and presents many other advantages apparent to those skilled in the art. In order that the flexible tubing may be readily and properly connected with the end of the permanent supply pipe to which the rubber hose was formerly connected, I have produced the improved coupling which forms the subject-matter of this application and which will secure the end of the supply pipe and the end of the flexible tubing together in juxtaposition without injury to the pipe and s0 that there will be no leakage and no opportunity for the accumulation of matter which would render the apparatus insanitary.

Ir. the accompanying drawings illustrating the invention Figure 1 is an elevation showing the coupling as it appears in actual use; Fig. 2 is a central sectional view on the line 2-2 of Fig. 1; Fig. 3 is a transverse sectional view on the line 3 3 of Fig. 2; and Fig. 4 shows the coupling constructed for connecting a solidmetal Ipipe to a soft metal p1pe.

Referring to the drawings, a collar 5 is rigidly mounted on the end of the flexible tubing 6 in a suitable lnanner. The flexible tubing may be removed to expose a part of the block tin lining 7 and the collar boredy at 8 to receive this expo-sed end of the lining and at 9 to receive a part of the flexible covering. The flexible tubing may be secured within the collar by soldering the block tin lining thereto or in any othei manner. A sleeve 10 is arranged on the softfmetal pipe l1 and this sleeve has an annuiar shoulder 12 at one end and is tapered-fand provided with a thread 13 at its other end. The sleeve is split and divided into a number of sections by longitudinal slots 14 extending throughout the threaded portion 12 to permit of expansion and contraction. A nut 15 f having a tapered threaded opening 16 engages the threaded portion of the sleeve to secure the latter on the pipe 11. A locking nut 17 is arranged lon the sleeve and has an inwardly extending annular flange 18 to engage the shoulder 12 of the sleeve. This nut is interiorly threaded to engage an exterior thread on the collar 5 whereby the collar and sleeve comprising the two members of the coupling may be secured together with the end of the block tin lining 7 of the flexible tubing 6 in juxtaposition to the end of the pipe 1 1. A gasket 19 of suitable character is located between the ends of the collar 5 and the sleeve 12 to form a fluid tight joint.

My invention provides a coupling of simple construction which requires no special skill for its application and this is especially important by reason of the particular uses for which the coupling is adapted as it will often be applied by persons of little or no skill in such matters. The ilexible tubing will be supplied with the collar permanently secured thereto and it can be connected with the end of the block tin supply pipe for soda fountains or beer coolers which usually projects a short distance from the ceilin of the basement or cellar, the draft mec anism being ylocated on the Hoor above.

In practice the sleeve carrying the nuts loosely is first slipped on to the block tin supply pipe and the gasket is placed on said pipe against the lower end of the sleeve. Then before fastening the sleeve on the supply pipe the end of said pi e, which projects below the sleeve, is inserted) in the collar and abutted against the block tin lining 7 of the flexible tubing. Then the collar is held in fixed position and the locking nut 17 is ad-V74 justed to tightly secure the sleeve and the collar together after Whichtheitapered -nut is adjusted to securely lock the sleeve upon the supply pipe. The divided sleeve vcan be readily arranged on the supply pipe and by reason of its taper and thetapered nut it can be securely lockedin position on the pipe. The interior surface of this sleeve may be threaded o-r serrated or otherwise roughened to bite the supply pipe if desired, but this is not necessary. iVhen the nut 15 is tightened the sleeve shouldv be heldby exigaging the fiat-tened parts 20 With a Wrench to prevent tunning and likevvisethe collar is held in fixed'position to prevent lturning While the nut lis tightened.

` I- have showrinthe drawingsA one forni of i.

flexible -tubingnwhich may be used to advantage 'but my' invention can be employed inl connection Witlmanyfiexible tubing suitable fo'r the 'purpose including those formed entirely of metal as Well` as those formed partly of metal and partly of other materials or wholly of non-metallic materials, .the block tin lining formingin every1 case a flexible and lsuitablelining for the tubing casetihe collar yWould bethreaded at 23 lto receive the threaded end of the pipe 21.

I claim:

The combination of a soft metal pipe, an arnior surrounding said soft metal pipe and terminating inwardly of the end of said pipe, a collar embracing said armor `and reduced in diameter beyond the end of said armor and fitting the end of said pipe beyond the armor, the end Lof thesaidoollar extending beyond the end ofsaid pipe, the said armor rbeing lsecured to said collar, a

second pipe fitting Within said collar and;

abutting against the end of the firstV mentioned pipe Wit-hin the collar, a second collar fitting said second pipe and being split at intervalsl from lone end throughout a part of its length and having an enlargement at the unsplit end,`a nut threaded on said collar over said split portion andserving to clampr the, said sleeve to ySaid second mentioned,

pipe, a sleeve having an inwardly extending shoulder embracing said first mentioned collar beyond said split portion and abutting against yits enlargement and threaded upon i said firstmeriti'oned collar; and a gasket interposed between adjacent'iportions of saidv Collars, said gasket serving to permit thev ends ofr said ypipespto be drawn into firm abutting contact p before said collars are moved to contacty one with the other While maintaining a yielding pressure between the collars.

` ROBERT C. BLUME. Witnesses:

VM. O. BELT, M. A. KIDDIE.

Copies of'this patent may be obtained for ve cents each,.by addressing the Commissioner of Patents,

Washington, D. C. 

